In the 1960s and 1970s, college students were in the front line of the Civil Rights and anti-war movements. Such activis

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In the 1960s and 1970s, college students were in the front line
of the Civil Rights and anti-war movements. Such activism is one of
the most powerful mechanisms for social change. A study looked at
the association between social justice advocacy as measured on the
ACT activity scale and political interest level as measured on the
1–10 POL scale. The researchers hoped to predict advocacy from
political interest.
The statistical summary of the data from a random sample of 134
graduate students at a Midwestern university is shown below.

In The 1960s And 1970s College Students Were In The Front Line Of The Civil Rights And Anti War Movements Such Activis 1 (13.77 KiB) Viewed 64 times

(a) What is b, the slope of the regression line? Interpret it in
context.
(b) What is the equation of the least-squares regression
line?
(c)Suppose a student has a POL of 4 with an ACT of 15. What is the
residual? Interpret it in context.
Variable Mean SD ACT 18.92 4.85 POL 5.48 2.24 r = 0.49